### Abstract

The relationship between isotopic composition and concentration of ambient CO_{2} in a canopy and its associated convective boundary layer was modeled. The model divides the canopy and convective boundary layer into several layers. Photosynthesis, respiration, and exchange between each layer can be simulated by matrix equations. This simulation can be used to calculate recycling; defined here as the amount of respired CO_{2} re-fixed by photosynthesis relative to the total amount of respired CO_{2}. At steady state the matrix equations can be solved for the canopy and convective boundary layer CO_{2} concentration and isotopic profile, which can be used to calculate a theoretical recycling index according to a previously developed equation. There is complete agreement between simulated and theoretical recycling indices for different exchange scenarios. Recycling indices from a simulation of gas exchange between a heterogeneous vegetation canopy and the troposphere also agreed with a more generalized form of the theoretical recycling equation developed here.

Original language | English |
---|---|

Pages (from-to) | 179-192 |

Number of pages | 14 |

Journal | Ecological Modelling |

Volume | 154 |

Issue number | 1-2 |

DOIs | |

State | Published - Aug 15 2002 |

### Fingerprint

### Keywords

- Carbon dioxide
- Carbon-13
- Convective boundary layer
- Gas exchange
- Recycling
- Troposphere

### ASJC Scopus subject areas

- Ecology, Evolution, Behavior and Systematics
- Ecological Modeling
- Ecology

### Cite this

_{2}and recycling: A matrix simulation model.

*Ecological Modelling*,

*154*(1-2), 179-192. https://doi.org/10.1016/S0304-3800(02)00055-8

**Carbon isotope composition of ambient CO _{2} and recycling : A matrix simulation model.** / Sternberg, Leonel; DeAngelis, Donald L.

Research output: Contribution to journal › Article

_{2}and recycling: A matrix simulation model',

*Ecological Modelling*, vol. 154, no. 1-2, pp. 179-192. https://doi.org/10.1016/S0304-3800(02)00055-8

_{2}and recycling: A matrix simulation model. Ecological Modelling. 2002 Aug 15;154(1-2):179-192. https://doi.org/10.1016/S0304-3800(02)00055-8

}

TY - JOUR

T1 - Carbon isotope composition of ambient CO2 and recycling

T2 - A matrix simulation model

AU - Sternberg, Leonel

AU - DeAngelis, Donald L.

PY - 2002/8/15

Y1 - 2002/8/15

N2 - The relationship between isotopic composition and concentration of ambient CO2 in a canopy and its associated convective boundary layer was modeled. The model divides the canopy and convective boundary layer into several layers. Photosynthesis, respiration, and exchange between each layer can be simulated by matrix equations. This simulation can be used to calculate recycling; defined here as the amount of respired CO2 re-fixed by photosynthesis relative to the total amount of respired CO2. At steady state the matrix equations can be solved for the canopy and convective boundary layer CO2 concentration and isotopic profile, which can be used to calculate a theoretical recycling index according to a previously developed equation. There is complete agreement between simulated and theoretical recycling indices for different exchange scenarios. Recycling indices from a simulation of gas exchange between a heterogeneous vegetation canopy and the troposphere also agreed with a more generalized form of the theoretical recycling equation developed here.

AB - The relationship between isotopic composition and concentration of ambient CO2 in a canopy and its associated convective boundary layer was modeled. The model divides the canopy and convective boundary layer into several layers. Photosynthesis, respiration, and exchange between each layer can be simulated by matrix equations. This simulation can be used to calculate recycling; defined here as the amount of respired CO2 re-fixed by photosynthesis relative to the total amount of respired CO2. At steady state the matrix equations can be solved for the canopy and convective boundary layer CO2 concentration and isotopic profile, which can be used to calculate a theoretical recycling index according to a previously developed equation. There is complete agreement between simulated and theoretical recycling indices for different exchange scenarios. Recycling indices from a simulation of gas exchange between a heterogeneous vegetation canopy and the troposphere also agreed with a more generalized form of the theoretical recycling equation developed here.

KW - Carbon dioxide

KW - Carbon-13

KW - Convective boundary layer

KW - Gas exchange

KW - Recycling

KW - Troposphere

UR - http://www.scopus.com/inward/record.url?scp=0037102642&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037102642&partnerID=8YFLogxK

U2 - 10.1016/S0304-3800(02)00055-8

DO - 10.1016/S0304-3800(02)00055-8

M3 - Article

AN - SCOPUS:0037102642

VL - 154

SP - 179

EP - 192

JO - Ecological Modelling

JF - Ecological Modelling

SN - 0304-3800

IS - 1-2

ER -